フリー問題

問題文

A technician installs a new software image on a switch and reads what the working word brings about and what the settling word brings about. Which statement is correct?

選択肢

1. The working word brings the switch back up on the new image, and the settling word writes a spare copy of that image to the flash for a later restart to fall back on.
2. The working word brings the switch back up on the new image, the settling word keeps that change in place across later restarts, and the image that was there before stays on the switch as a spare.
3. The working word brings the switch back up on the new image, the settling word keeps that change in place across later restarts, and the image that was there before is replaced, so one image sits on the switch at a time.
4. The settling word brings the switch back up on the new image, the working word keeps that change in place across later restarts, and the image that was there before is replaced.